Disk cultivator.



w. H. ATKINSON.

DISK OULTIVATOR.

APPLICATION FILED MAR. 31, 1913. 1,096,664. Patented May 12, 1914,

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WILLIAM H. ATKINSON, O13 HEDLEY, TEXAS.

DISK GULT'IV'ATOR.

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Specification of Letters Patent.

Patented May 12, 1911.

Application filed March 31, 1913. Serial No. 757,836.

To all whom it may concern Be it known that 1, WILLIAM IT. ATKIN- soN, a citizenof the United. States, residing at Hedley, in the county of Donlcy and State of Texas, have invented. certain new and useful Improvements in Disk Cultivators, of which the following is a specification.

My invention relates to disk cultivators and more particularly relates to that class of cultivators which are provided with two gangs of disks acting at each side of a row 1 of plants as the machine travels along the road.

The object of the invention is to provide a straddlerow disk cultivator, so constructcient and comparatively easy to construct and also one the various parts of which will not be llkely to get out of working order.

VV1th these and various other ob ects in view, my invention has relation to certain novel features of the construction and operation, an example of which is described in the following specification and illustrated in the accompanying drawings, wherein:

Figure 1 is a plan View of a disk cultiva tor with which is correlated the novel ad justing mechanisms constituting the present invention. Fig. 2 is a view of the same in rear elevation. Fig. 3 is a view of the same in side elevation.

Referring now more particularly to the drawings, wherein like reference characters designate similar parts in all the figures,

the numeral 1 denotes the rectangular frame of the machine, a large opening being formed between the ends and the sides of said frame. Uponthe rear portion of the frame 1, a pair of depending bracket members 2 are respectively mounted in an opposite relation upon the side members of said frame, and from the lower ends of each bracket member, an axle spindle 3 projects integrally outward. A. pair of transporting wheels 41 are respectively mounted upon said spindles 3.

Upon the exterior face of the front end of the frame 1, there is mounted a bearing 5, in which is swiveled the upper end of a k ng pin 6, said upper portion of the king pin being of reduced thickness. The lower extremity of the king pin 6 has a welded or other rigid connection with the center of the forward axle 7, upon the extremities of which a pair of transporting wheels 4: are mounted. A short portion of the king pin, which portion projects above the bearing 5 squared to fit within a square socket formed in the forward end of a steering lever 9, which lever projects centrally of the frame in a rearward direction. A drivers seat will be provided on the rear portion of the machine but the same is omitted from the drawing to avoid concealing more important parts.

it is apparent from the foregoing description that a manipulation of the lever 9 toward either side of the machine will produce a corrcspomling angular displacement of the forward. axle serving to steer the machine in the desired direction.

Upon the rear end of the frame 1, there is rigidly mounted an arched member comprisinga horizontal bar 10 resting transversely upon the same and a pair of integral vertical side bars 10 respectively bolted at their upper ends to the side bars of the frame 1. The end portions of the bars 10 are twisted through a quarter turn as indicated at 11, and upon the rear faces of the portions 11 there are respectively mounted a pair of bearings 12 in which is journaled a rock shaft 13 transverse of the machine. The rock shaft 13 has an upwardly projecting crank 14 formed at its middle, and has its extremities projecting laterally beyond the bearings 12 and verticallyfiattened as indicated at 15. An angular bracket compris iug a substantially upright portion 16 and a rearwardly projecting portion 17 is pivotally mounted upon each flattened end portion 15 of the rock shaft 13. The upper portion of each upright member 16 will preferably he oilset rearwardly, and the lower portion of said member will receive the pivot bolt 18 which passes through the correlated portion 15 of the rock shaft. The rear extremity of each member 17 is pivotally connected by means of a pivot bolt 17 with the forward end of a bar 19, the latter member being adapted to swing horizontally about the pivot bolt 17. There is surmounted upon the rear portion of each bar 19 a bearing 20, in. which bearing is jour-- naled a. shaft 21 restricted from longitudinal displacement by a pair of set collars 21 fast upon the shaft at each side of the correlated bearing. Upon each of said shafts, a gang of cultivator disks 22 is mounted, the same being held fast on the correlated shaft by any suitable means.

To the crank 14 there is pivotally connected the rear extremity of a rod 23 having its forward end pivoted upon the lower eX- tremity of a lever 24L, pivoted at a point spaced from the lower end upon a bar 25 extending transversely of the frame. Said lever is correlated with the usual means for holding it adjusted in various positions of angular displacement. From the foregoing description it is apparent that by manipulating said. lever the shaft 13 may be rocked so as to raise or lower the disk gangs and regulate the depth to which said gangs enter the ground.

Upon the rear extremity of the frame 1 there is centrally pivoted a substantially vertical lever 26 to which at points equally spaced above and below its pivot point 27 there are pivotally connected extremities of rods 28 extending laterally in opposite directions and respectively connected at their other ends to the upper extremities of the members 16. The connections between the rods 28 and the members 16 and lever 26 are established by forming rings upon the extremities of said rods as indicated at 28, the reason for employing this particular form of connection being hereinafter made clear. With the lever 26 there is correlated the usual means for holding said lever adjusted in various positions of angular displacement.

It will be seen from the foregoing description that a manipulation of the lever 26 will cause the parts 16, 17, 19, 20, 21 and 22 to undergo a partial rotation about the pivot bolt 18, thus adjusting the two disk gangs in any desired angular relation to the ground.

To the members 19, there are respectively secured the other extremities of transverse bars 29 having their inner extremities spaced and turned upwardly as indicated at 30. To the upward turned ends 30 of the bars 29, there are respectively connected the rear ends of a pair of rods 31. The forward ends of the bars 31 are mounted upon the lower end'of a lever 32 pivoted some distance above its lower end upon the bar 33 transversely carried by the frame 1. In order to establish a swinging pivotal connection between said rods 31 and the corre lated parts 30 and 32, the rods have rings 33 formed upon their extremities to engage said correlated parts. The usual device is provided in combination with the lever 32 to hold the same adjusted in various positions of angular displacement. When the lever 32 is manipulatedthe bars 19 will be swung horizontally about their point of pivotal connection with the member 17 thus adjusting the two disk gangs toward or from each other, and atthe same time subjecting the shaft 21 to an angular displacement in a horizontal plane.

When the shaft 13 is subjected to a partial rotation, the upper extremities of the member 16 will of course undergo a slight V displacement toward the front or rear of the machine. In order that the rods 28 may not interfere with this displacement, said rods are so connected with the members 16 and the lever 26 as to leave their outer ends free to undergo the aforesaid displacement which may be impressed upon the upper ends of the members 16. It will also be noted that when the lever 26 is manipulated, the inner extremities 30 of the bars 29 will be subjected to a certain amount of vertical displacement. In order that this displacement may not be hindered by the rods 31, said rods are so connected with the lever 32 and the members 30 respectively that the rear ends of said rods may undergo such vertical displacement as is impressed upon the outer ends of the bars 19. In case however the rods 31 have not suflicient play to permit the desired vertical displacement of the parts 30, by adjusting the lever 32 the rod 31 may be displaced rearwardly so as to permit the desired motion of the said parts.

From the preceding description it may readily be seen that the driver seated upon the rear portion of the machine may readily reach the levers controlling the various mechanisms and by manipulating said Isvers may impress upon the disk gangs any, desired adjustment.

The invention is presented as including all such modifications and changes as properly come within the scope of the following claims.

What I claim is:

1. In a disk cultivator the combination with a wheeled frame, of a rock shaft carried by said frame transversely thereon and adjacent to the ground, a lever for rocking.

the shaft mounted on the frame and having connection with said shaft, members pivotally mounted on the extremities of the shaft, a lever mounted on the frame, connections between the last named lever and and cultivator disks mounted on'the lastnamed shafts.

2. In a disk cultivator, the combination with a wheeled frame, of a rock shaft carried by said frame transversely thereof, members pivoted to swing transversely of the frame on the ends of the shaft, means for simultaneously swinging the members, means for rocking the rock shaft, a disk shaft pivoted on each member to swing in a horizontal plane, means for swinging the disk shafts simultaneously in a horizontal plane, and cultivator disks mounted on the disk shaft.

3. In a disk cultivator, the combination with a wheeled frame, of a rock shaft supported by said frame transversely thereof and adjacent to the ground, a manually operated means for operating the rock shaft, a pair of brackets respectively pivoted upon the rock shaft extremities, a manually operated means for simultaneously subjecting Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

